Games like Resident Evil 6
Games like Resident Evil 6 include Resident Evil 5, Left 4 Dead 2, Resident Evil Revelations 2, Resident Evil 3, and HELLDIVERS™ 2. We matched them by the tags players give Resident Evil 6 on Steam (Action, Zombies, Third-Person Shooter, Horror, and Online Co-Op): closest matches first, and among equally close ones the better-known games.

Resident Evil 5
Shared: Action · Co-op · Zombies

Left 4 Dead 2
Shared: Zombies · Co-op · Action

Resident Evil Revelations 2
Shared: Zombies · Action · Horror

Resident Evil 3
Shared: Action · Zombies · Horror

HELLDIVERS™ 2
Shared: Third-Person Shooter · Action · Online Co-Op

Left 4 Dead
Shared: Zombies · Co-op · Action

PUBG: BATTLEGROUNDS
Shared: Action · Third-Person Shooter · Multiplayer

Back 4 Blood
Shared: Zombies · Online Co-Op · Action

World War Z
Shared: Zombies · Action · Co-op

Dying Light
Shared: Zombies · Horror · Online Co-Op

Gears 5
Shared: Action · Third-Person Shooter · Co-op

Resident Evil 4 (2005)
Shared: Action · Zombies · Horror

It Takes Two
Shared: Co-op · Multiplayer · Online Co-Op

Resident Evil Revelations
Shared: Action · Zombies · Horror

Grand Theft Auto V Legacy
Shared: Action · Multiplayer · Third-Person Shooter

Dead by Daylight
Shared: Horror · Co-op · Multiplayer

Gears of War: E-Day
Shared: Action · Third-Person Shooter · Co-op

Resident Evil 4
Shared: Action · Horror · Third-Person Shooter

Zombie Army Trilogy
Shared: Zombies · Action · Co-op

Warhammer 40,000: Space Marine 2
Shared: Action · Co-op · Third-Person Shooter

REMNANT II®
Shared: Action · Co-op · Third-Person Shooter

Killing Floor
Shared: Zombies · Co-op · Action

DayZ
Shared: Zombies · Online Co-Op · Multiplayer

A Way Out
Shared: Co-op · Online Co-Op · Action